Stun gun



FIG. 1 depicts a front, top, and side perspective view of a stun gun;

FIG. 2 depicts a rear, side, and bottom perspective view thereof;

FIG. 3 depicts a side elevation view thereof;

FIG. 4 depicts a rear and opposite side perspective view thereof; and,

FIG. 5 is a front and opposite side perspective view.

The broken lines depict environmental structure and form no part of the claimed design. 

CLAIM I claim the ornamental design for a stun gun, as shown and described. 